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24 Hour Fitness

100 California Street

San Francisco , CA 94111

(415) 434-5080

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24 Hour Fitness Worldwide, the world’s largest privately owned and operated fitness center chain, began as a one-club operation in 1983. From the start, 24 Hour Fitness Worldwide Chairman, CEO and visionary, Mark S. Mastrov, had a vision to make fitness a way of life by creating the ultimate in multi-sport fitness centers and making them affordable and accessible to people of all abilities and fitness levels.
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